"It's a waste of money to buy an APM 2560 having an APM 1280 except if you want to upgrade the code by your own and 128k flash is not enought for you."
Its just for curiosity, my quad is working fine now, but I measured in the scope the PPM output from APM to ESC and I noticed that its is arround 3V, is it common? shouldnt it be 5V? update rate arducopter.png
I was testing flight time today with 2 batteries: 4S 5000mAh and 4S 3300mAh. With the heavier battery I didnt notice the problem but when I changed the battery to the lightter one I did notice that It was jumping, some times rolling peaks, sometimes…
"I'm having the same problem... it won't change much to use a faster loop if my ESC works on 50Hz...
For altitude, I would use only sonar for lower altitude and for higher altitude pressure + accel integration.
You can use a lowpass filter on the…"